Ultrasonic velocities of opaline rocks undergoing silica diagenesis

Details Ultrasonic velocities of opaline rocks undergoing silica diagenesis Ultrasonic velocities of opaline rocks undergoing silica diagenesis

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.2039c&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 16, p. 2039-2042

Physics

Physical Properties Of Rocks: Acoustic Properties

Scientific paper

Experimental results of laboratory measurements at ultrasonic frequencies on dry opaline rocks are documented from the Monterey Formation, a siliceous unit in the San Joaquin basin. In these samples the silica is primarily biogenic opal-A in origin, but progressively alters to opal-CT and then quartz with depth. The diagenetic transitions are accompanied by a marked porosity reduction. Compressional and shear wave velocities were measured on core plugs at effective reservoir pressure. Experimental results on samples from the opal-A/opal-CT transition and the opal-CT/quartz transition show very little pressure-dependence of elastic-wave velocities. When their elastic moduli are normalized by those of the solid phase, the moduli-porosity trend is very close to that of chalk and, in the lower-porosity domain, of some clean sandstones.

Affiliated with

Also associated with

No associations

Rating

Ultrasonic velocities of opaline rocks undergoing silica diagenesis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ultrasonic velocities of opaline rocks undergoing silica diagenesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic velocities of opaline rocks undergoing silica diagenesis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-805288